Toward submicrometer optical storage through controlled molecular disorder in azo-dye copolymer films
JOSA B, Vol. 24, Issue 3, pp. 532-537 (2007)
http://dx.doi.org/10.1364/JOSAB.24.000532
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Abstract
While information encoding through optically induced orientation of azo dyes in organic matrices is being extensively pursued, we propose the alternative of starting out with poled films and to locally reduce their second-harmonic generation capacity by a focused near-infrared femtosecond laser beam of moderate intensity. Arrays of dots irradiated under varying conditions are subsequently imaged in situ as dark spots on a bright background. The samples are also examined through conventional optical microscopy and through atomic force microscopy. We demonstrate that, of these techniques, second-harmonic imaging performs best in the task of information retrieval.
© 2007 Optical Society of America
OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(190.4180) Nonlinear optics : Multiphoton processes
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(210.4810) Optical data storage : Optical storage-recording materials
ToC Category:
Materials
History
Original Manuscript: July 18, 2006
Revised Manuscript: September 22, 2006
Manuscript Accepted: October 25, 2006
Published: February 15, 2007
Citation
Denis Gindre, Alex Boeglin, Gregory Taupier, Olivier Crégut, Jean-Pierre Vola, Alberto Barsella, Loïc Mager, Alain Fort, and Kokou D. Dorkenoo, "Toward submicrometer optical storage through controlled molecular disorder in azo-dye copolymer films," J. Opt. Soc. Am. B 24, 532-537 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-3-532
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